package com.markerhub.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter("*")
public class CrossSeting implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletResponse response= (HttpServletResponse) servletResponse;
        HttpServletRequest request= (HttpServletRequest) servletRequest;
        response.addHeader("Access-Control-Allow-Origin","*");
        response.addHeader("Access-Control-Allow-Headers","*");
        response.addHeader("Access-Control-Allow-Credentials","true");
        response.addHeader("Access-Control-Allow-Methods","GET,POST,DETELE,PUT,OPTIONS");
        if (request.getMethod().equals("OPTIONS")){
            response.setStatus(HttpServletResponse.SC_OK);
        }else {
            filterChain.doFilter(servletRequest,servletResponse);
        }
    }

    @Override
    public void destroy() {

    }
}
